The highest percentage that I used when describing punitive and arbitrary practices was 50 percent, which implied said percentage as the maximum. 50 percent is the current maximum share that can be demanded by a duke or ruler. I apologize if that was not clear.
My apologies. I had never seen a tax rate higher than 25% demanded by a duke or a ruler, so I assumed that was the max. I looked into and it seems you are correct on that.